Bb7-9 (Bb7b9) altered chord
Altered Bb chord for piano presented by keyboard diagrams.
Explanation: The Bb7-9 alter the Bb9 by the change of one note. The chord name can also be written as Bb7b9 or Bb7(b9).
Theory: The Bb7-9 are identical with the Bb9 except that the major ninth is flattenedThe tone is one half step lower.
Bb7-9
Notes: Bb - D - F - Ab - Cb
A7-9 chord ‹ Previous • Next › B7-9 chord
See also Bb7+9 chord ›